12131711 has 2 divisors, whose sum is σ = 12131712. Its totient is φ = 12131710.

The previous prime is 12131701. The next prime is 12131759. The reversal of 12131711 is 11713121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12131711 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12131711.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12131701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065855 + 6065856.

It is an arithmetic number, because the mean of its divisors is an integer number (6065856).

Almost surely, 2^12131711 is an apocalyptic number.

12131711 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131711 is an equidigital number, since it uses as much as digits as its factorization.

12131711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42, while the sum is 17.

The square root of 12131711 is about 3483.0605794330. The cubic root of 12131711 is about 229.7774217245. Note that the first 3 decimals are identical.

Adding to 12131711 its reverse (11713121), we get a palindrome (23844832).

The spelling of 12131711 in words is "twelve million, one hundred thirty-one thousand, seven hundred eleven".